/*
 * Copyright (C) 2010-2011 Enrique Lara (enrique.posix2.lara@gmail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
 * limitations under the License.
  */
package trs.wmata;

import java.io.Serializable;
import java.util.Comparator;

public final class TrainStationComparator implements Comparator<TrainStation>, Serializable {
    private static final long serialVersionUID = -291775810013742116L;

    public int compare(final TrainStation s1, final TrainStation s2) {
        if (s1 == null) {
            if (s2 == null) {
                return 0;
            } else {
                return -1;
            }
        } else {
            if (s2 == null) {
                return 1;
            } else {
                return s1.getName().compareTo(s2.getName());
            }
        }
    }
}
